1 /* $NetBSD: terminal.c,v 1.10 2011/10/04 15:27:04 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Christos Zoulas of Cornell University. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include "config.h" 36 #if !defined(lint) && !defined(SCCSID) 37 #if 0 38 static char sccsid[] = "@(#)term.c 8.2 (Berkeley) 4/30/95"; 39 #else 40 __RCSID("$NetBSD: terminal.c,v 1.10 2011/10/04 15:27:04 christos Exp $"); 41 #endif 42 #endif /* not lint && not SCCSID */ 43 44 /* 45 * terminal.c: Editor/termcap-curses interface 46 * We have to declare a static variable here, since the 47 * termcap putchar routine does not take an argument! 48 */ 49 #include <stdio.h> 50 #include <signal.h> 51 #include <string.h> 52 #include <stdlib.h> 53 #include <unistd.h> 54 #include <limits.h> 55 #ifdef HAVE_TERMCAP_H 56 #include <termcap.h> 57 #endif 58 #ifdef HAVE_CURSES_H 59 #include <curses.h> 60 #elif HAVE_NCURSES_H 61 #include <ncurses.h> 62 #endif 63 64 /* Solaris's term.h does horrid things. */ 65 #if defined(HAVE_TERM_H) && !defined(__sun) 66 #include <term.h> 67 #endif 68 69 #include <sys/types.h> 70 #include <sys/ioctl.h> 71 72 #ifdef _REENTRANT 73 #include <pthread.h> 74 #endif 75 76 #include "el.h" 77 78 /* 79 * IMPORTANT NOTE: these routines are allowed to look at the current screen 80 * and the current position assuming that it is correct. If this is not 81 * true, then the update will be WRONG! This is (should be) a valid 82 * assumption... 83 */ 84 85 #define TC_BUFSIZE ((size_t)2048) 86 87 #define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \ 88 el->el_terminal.t_str[a][0] != '\0') 89 #define Str(a) el->el_terminal.t_str[a] 90 #define Val(a) el->el_terminal.t_val[a] 91 92 private const struct termcapstr { 93 const char *name; 94 const char *long_name; 95 } tstr[] = { 96 #define T_al 0 97 { "al", "add new blank line" }, 98 #define T_bl 1 99 { "bl", "audible bell" }, 100 #define T_cd 2 101 { "cd", "clear to bottom" }, 102 #define T_ce 3 103 { "ce", "clear to end of line" }, 104 #define T_ch 4 105 { "ch", "cursor to horiz pos" }, 106 #define T_cl 5 107 { "cl", "clear screen" }, 108 #define T_dc 6 109 { "dc", "delete a character" }, 110 #define T_dl 7 111 { "dl", "delete a line" }, 112 #define T_dm 8 113 { "dm", "start delete mode" }, 114 #define T_ed 9 115 { "ed", "end delete mode" }, 116 #define T_ei 10 117 { "ei", "end insert mode" }, 118 #define T_fs 11 119 { "fs", "cursor from status line" }, 120 #define T_ho 12 121 { "ho", "home cursor" }, 122 #define T_ic 13 123 { "ic", "insert character" }, 124 #define T_im 14 125 { "im", "start insert mode" }, 126 #define T_ip 15 127 { "ip", "insert padding" }, 128 #define T_kd 16 129 { "kd", "sends cursor down" }, 130 #define T_kl 17 131 { "kl", "sends cursor left" }, 132 #define T_kr 18 133 { "kr", "sends cursor right" }, 134 #define T_ku 19 135 { "ku", "sends cursor up" }, 136 #define T_md 20 137 { "md", "begin bold" }, 138 #define T_me 21 139 { "me", "end attributes" }, 140 #define T_nd 22 141 { "nd", "non destructive space" }, 142 #define T_se 23 143 { "se", "end standout" }, 144 #define T_so 24 145 { "so", "begin standout" }, 146 #define T_ts 25 147 { "ts", "cursor to status line" }, 148 #define T_up 26 149 { "up", "cursor up one" }, 150 #define T_us 27 151 { "us", "begin underline" }, 152 #define T_ue 28 153 { "ue", "end underline" }, 154 #define T_vb 29 155 { "vb", "visible bell" }, 156 #define T_DC 30 157 { "DC", "delete multiple chars" }, 158 #define T_DO 31 159 { "DO", "cursor down multiple" }, 160 #define T_IC 32 161 { "IC", "insert multiple chars" }, 162 #define T_LE 33 163 { "LE", "cursor left multiple" }, 164 #define T_RI 34 165 { "RI", "cursor right multiple" }, 166 #define T_UP 35 167 { "UP", "cursor up multiple" }, 168 #define T_kh 36 169 { "kh", "send cursor home" }, 170 #define T_at7 37 171 { "@7", "send cursor end" }, 172 #define T_str 38 173 { NULL, NULL } 174 }; 175 176 private const struct termcapval { 177 const char *name; 178 const char *long_name; 179 } tval[] = { 180 #define T_am 0 181 { "am", "has automatic margins" }, 182 #define T_pt 1 183 { "pt", "has physical tabs" }, 184 #define T_li 2 185 { "li", "Number of lines" }, 186 #define T_co 3 187 { "co", "Number of columns" }, 188 #define T_km 4 189 { "km", "Has meta key" }, 190 #define T_xt 5 191 { "xt", "Tab chars destructive" }, 192 #define T_xn 6 193 { "xn", "newline ignored at right margin" }, 194 #define T_MT 7 195 { "MT", "Has meta key" }, /* XXX? */ 196 #define T_val 8 197 { NULL, NULL, } 198 }; 199 /* do two or more of the attributes use me */ 200 201 private void terminal_setflags(EditLine *); 202 private int terminal_rebuffer_display(EditLine *); 203 private void terminal_free_display(EditLine *); 204 private int terminal_alloc_display(EditLine *); 205 private void terminal_alloc(EditLine *, const struct termcapstr *, 206 const char *); 207 private void terminal_init_arrow(EditLine *); 208 private void terminal_reset_arrow(EditLine *); 209 private int terminal_putc(int); 210 private void terminal_tputs(EditLine *, const char *, int); 211 212 #ifdef _REENTRANT 213 private pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER; 214 #endif 215 private FILE *terminal_outfile = NULL; 216 217 218 /* terminal_setflags(): 219 * Set the terminal capability flags 220 */ 221 private void 222 terminal_setflags(EditLine *el) 223 { 224 EL_FLAGS = 0; 225 if (el->el_tty.t_tabs) 226 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0; 227 228 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0; 229 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0; 230 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0; 231 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ? 232 TERM_CAN_INSERT : 0; 233 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0; 234 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0; 235 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0; 236 237 if (GoodStr(T_me) && GoodStr(T_ue)) 238 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ? 239 TERM_CAN_ME : 0; 240 else 241 EL_FLAGS &= ~TERM_CAN_ME; 242 if (GoodStr(T_me) && GoodStr(T_se)) 243 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ? 244 TERM_CAN_ME : 0; 245 246 247 #ifdef DEBUG_SCREEN 248 if (!EL_CAN_UP) { 249 (void) fprintf(el->el_errfile, 250 "WARNING: Your terminal cannot move up.\n"); 251 (void) fprintf(el->el_errfile, 252 "Editing may be odd for long lines.\n"); 253 } 254 if (!EL_CAN_CEOL) 255 (void) fprintf(el->el_errfile, "no clear EOL capability.\n"); 256 if (!EL_CAN_DELETE) 257 (void) fprintf(el->el_errfile, "no delete char capability.\n"); 258 if (!EL_CAN_INSERT) 259 (void) fprintf(el->el_errfile, "no insert char capability.\n"); 260 #endif /* DEBUG_SCREEN */ 261 } 262 263 /* terminal_init(): 264 * Initialize the terminal stuff 265 */ 266 protected int 267 terminal_init(EditLine *el) 268 { 269 270 el->el_terminal.t_buf = el_malloc(TC_BUFSIZE * 271 sizeof(*el->el_terminal.t_buf)); 272 if (el->el_terminal.t_buf == NULL) 273 return -1; 274 el->el_terminal.t_cap = el_malloc(TC_BUFSIZE * 275 sizeof(*el->el_terminal.t_cap)); 276 if (el->el_terminal.t_cap == NULL) 277 return -1; 278 el->el_terminal.t_fkey = el_malloc(A_K_NKEYS * 279 sizeof(*el->el_terminal.t_fkey)); 280 if (el->el_terminal.t_fkey == NULL) 281 return -1; 282 el->el_terminal.t_loc = 0; 283 el->el_terminal.t_str = el_malloc(T_str * 284 sizeof(*el->el_terminal.t_str)); 285 if (el->el_terminal.t_str == NULL) 286 return -1; 287 (void) memset(el->el_terminal.t_str, 0, T_str * 288 sizeof(*el->el_terminal.t_str)); 289 el->el_terminal.t_val = el_malloc(T_val * 290 sizeof(*el->el_terminal.t_val)); 291 if (el->el_terminal.t_val == NULL) 292 return -1; 293 (void) memset(el->el_terminal.t_val, 0, T_val * 294 sizeof(*el->el_terminal.t_val)); 295 (void) terminal_set(el, NULL); 296 terminal_init_arrow(el); 297 return 0; 298 } 299 300 /* terminal_end(): 301 * Clean up the terminal stuff 302 */ 303 protected void 304 terminal_end(EditLine *el) 305 { 306 307 el_free(el->el_terminal.t_buf); 308 el->el_terminal.t_buf = NULL; 309 el_free(el->el_terminal.t_cap); 310 el->el_terminal.t_cap = NULL; 311 el->el_terminal.t_loc = 0; 312 el_free(el->el_terminal.t_str); 313 el->el_terminal.t_str = NULL; 314 el_free(el->el_terminal.t_val); 315 el->el_terminal.t_val = NULL; 316 el_free(el->el_terminal.t_fkey); 317 el->el_terminal.t_fkey = NULL; 318 terminal_free_display(el); 319 } 320 321 322 /* terminal_alloc(): 323 * Maintain a string pool for termcap strings 324 */ 325 private void 326 terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap) 327 { 328 char termbuf[TC_BUFSIZE]; 329 size_t tlen, clen; 330 char **tlist = el->el_terminal.t_str; 331 char **tmp, **str = &tlist[t - tstr]; 332 333 if (cap == NULL || *cap == '\0') { 334 *str = NULL; 335 return; 336 } else 337 clen = strlen(cap); 338 339 tlen = *str == NULL ? 0 : strlen(*str); 340 341 /* 342 * New string is shorter; no need to allocate space 343 */ 344 if (clen <= tlen) { 345 if (*str) 346 (void) strcpy(*str, cap); /* XXX strcpy is safe */ 347 return; 348 } 349 /* 350 * New string is longer; see if we have enough space to append 351 */ 352 if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) { 353 /* XXX strcpy is safe */ 354 (void) strcpy(*str = &el->el_terminal.t_buf[ 355 el->el_terminal.t_loc], cap); 356 el->el_terminal.t_loc += clen + 1; /* one for \0 */ 357 return; 358 } 359 /* 360 * Compact our buffer; no need to check compaction, cause we know it 361 * fits... 362 */ 363 tlen = 0; 364 for (tmp = tlist; tmp < &tlist[T_str]; tmp++) 365 if (*tmp != NULL && *tmp != '\0' && *tmp != *str) { 366 char *ptr; 367 368 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++) 369 continue; 370 termbuf[tlen++] = '\0'; 371 } 372 memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE); 373 el->el_terminal.t_loc = tlen; 374 if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) { 375 (void) fprintf(el->el_errfile, 376 "Out of termcap string space.\n"); 377 return; 378 } 379 /* XXX strcpy is safe */ 380 (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc], 381 cap); 382 el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */ 383 return; 384 } 385 386 387 /* terminal_rebuffer_display(): 388 * Rebuffer the display after the screen changed size 389 */ 390 private int 391 terminal_rebuffer_display(EditLine *el) 392 { 393 coord_t *c = &el->el_terminal.t_size; 394 395 terminal_free_display(el); 396 397 c->h = Val(T_co); 398 c->v = Val(T_li); 399 400 if (terminal_alloc_display(el) == -1) 401 return -1; 402 return 0; 403 } 404 405 406 /* terminal_alloc_display(): 407 * Allocate a new display. 408 */ 409 private int 410 terminal_alloc_display(EditLine *el) 411 { 412 int i; 413 Char **b; 414 coord_t *c = &el->el_terminal.t_size; 415 416 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1)); 417 if (b == NULL) 418 return -1; 419 for (i = 0; i < c->v; i++) { 420 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1)); 421 if (b[i] == NULL) { 422 while (--i >= 0) 423 el_free(b[i]); 424 el_free(b); 425 return -1; 426 } 427 } 428 b[c->v] = NULL; 429 el->el_display = b; 430 431 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1)); 432 if (b == NULL) 433 return -1; 434 for (i = 0; i < c->v; i++) { 435 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1)); 436 if (b[i] == NULL) { 437 while (--i >= 0) 438 el_free(b[i]); 439 el_free(b); 440 return -1; 441 } 442 } 443 b[c->v] = NULL; 444 el->el_vdisplay = b; 445 return 0; 446 } 447 448 449 /* terminal_free_display(): 450 * Free the display buffers 451 */ 452 private void 453 terminal_free_display(EditLine *el) 454 { 455 Char **b; 456 Char **bufp; 457 458 b = el->el_display; 459 el->el_display = NULL; 460 if (b != NULL) { 461 for (bufp = b; *bufp != NULL; bufp++) 462 el_free(*bufp); 463 el_free(b); 464 } 465 b = el->el_vdisplay; 466 el->el_vdisplay = NULL; 467 if (b != NULL) { 468 for (bufp = b; *bufp != NULL; bufp++) 469 el_free(*bufp); 470 el_free(b); 471 } 472 } 473 474 475 /* terminal_move_to_line(): 476 * move to line <where> (first line == 0) 477 * as efficiently as possible 478 */ 479 protected void 480 terminal_move_to_line(EditLine *el, int where) 481 { 482 int del; 483 484 if (where == el->el_cursor.v) 485 return; 486 487 if (where > el->el_terminal.t_size.v) { 488 #ifdef DEBUG_SCREEN 489 (void) fprintf(el->el_errfile, 490 "terminal_move_to_line: where is ridiculous: %d\r\n", 491 where); 492 #endif /* DEBUG_SCREEN */ 493 return; 494 } 495 if ((del = where - el->el_cursor.v) > 0) { 496 while (del > 0) { 497 if (EL_HAS_AUTO_MARGINS && 498 el->el_display[el->el_cursor.v][0] != '\0') { 499 size_t h = (size_t) 500 (el->el_terminal.t_size.h - 1); 501 #ifdef WIDECHAR 502 for (; h > 0 && 503 el->el_display[el->el_cursor.v][h] == 504 MB_FILL_CHAR; 505 h--) 506 continue; 507 #endif 508 /* move without newline */ 509 terminal_move_to_char(el, (int)h); 510 terminal_overwrite(el, &el->el_display 511 [el->el_cursor.v][el->el_cursor.h], 512 (size_t)(el->el_terminal.t_size.h - 513 el->el_cursor.h)); 514 /* updates Cursor */ 515 del--; 516 } else { 517 if ((del > 1) && GoodStr(T_DO)) { 518 terminal_tputs(el, tgoto(Str(T_DO), del, 519 del), del); 520 del = 0; 521 } else { 522 for (; del > 0; del--) 523 terminal__putc(el, '\n'); 524 /* because the \n will become \r\n */ 525 el->el_cursor.h = 0; 526 } 527 } 528 } 529 } else { /* del < 0 */ 530 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) 531 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del); 532 else { 533 if (GoodStr(T_up)) 534 for (; del < 0; del++) 535 terminal_tputs(el, Str(T_up), 1); 536 } 537 } 538 el->el_cursor.v = where;/* now where is here */ 539 } 540 541 542 /* terminal_move_to_char(): 543 * Move to the character position specified 544 */ 545 protected void 546 terminal_move_to_char(EditLine *el, int where) 547 { 548 int del, i; 549 550 mc_again: 551 if (where == el->el_cursor.h) 552 return; 553 554 if (where > el->el_terminal.t_size.h) { 555 #ifdef DEBUG_SCREEN 556 (void) fprintf(el->el_errfile, 557 "terminal_move_to_char: where is riduculous: %d\r\n", 558 where); 559 #endif /* DEBUG_SCREEN */ 560 return; 561 } 562 if (!where) { /* if where is first column */ 563 terminal__putc(el, '\r'); /* do a CR */ 564 el->el_cursor.h = 0; 565 return; 566 } 567 del = where - el->el_cursor.h; 568 569 if ((del < -4 || del > 4) && GoodStr(T_ch)) 570 /* go there directly */ 571 terminal_tputs(el, tgoto(Str(T_ch), where, where), where); 572 else { 573 if (del > 0) { /* moving forward */ 574 if ((del > 4) && GoodStr(T_RI)) 575 terminal_tputs(el, tgoto(Str(T_RI), del, del), 576 del); 577 else { 578 /* if I can do tabs, use them */ 579 if (EL_CAN_TAB) { 580 if ((el->el_cursor.h & 0370) != 581 (where & ~0x7) 582 #ifdef WIDECHAR 583 && (el->el_display[ 584 el->el_cursor.v][where & 0370] != 585 MB_FILL_CHAR) 586 #endif 587 ) { 588 /* if not within tab stop */ 589 for (i = 590 (el->el_cursor.h & 0370); 591 i < (where & ~0x7); 592 i += 8) 593 terminal__putc(el, 594 '\t'); 595 /* then tab over */ 596 el->el_cursor.h = where & ~0x7; 597 } 598 } 599 /* 600 * it's usually cheaper to just write the 601 * chars, so we do. 602 */ 603 /* 604 * NOTE THAT terminal_overwrite() WILL CHANGE 605 * el->el_cursor.h!!! 606 */ 607 terminal_overwrite(el, &el->el_display[ 608 el->el_cursor.v][el->el_cursor.h], 609 (size_t)(where - el->el_cursor.h)); 610 611 } 612 } else { /* del < 0 := moving backward */ 613 if ((-del > 4) && GoodStr(T_LE)) 614 terminal_tputs(el, tgoto(Str(T_LE), -del, -del), 615 -del); 616 else { /* can't go directly there */ 617 /* 618 * if the "cost" is greater than the "cost" 619 * from col 0 620 */ 621 if (EL_CAN_TAB ? 622 ((unsigned int)-del > 623 (((unsigned int) where >> 3) + 624 (where & 07))) 625 : (-del > where)) { 626 terminal__putc(el, '\r');/* do a CR */ 627 el->el_cursor.h = 0; 628 goto mc_again; /* and try again */ 629 } 630 for (i = 0; i < -del; i++) 631 terminal__putc(el, '\b'); 632 } 633 } 634 } 635 el->el_cursor.h = where; /* now where is here */ 636 } 637 638 639 /* terminal_overwrite(): 640 * Overstrike num characters 641 * Assumes MB_FILL_CHARs are present to keep the column count correct 642 */ 643 protected void 644 terminal_overwrite(EditLine *el, const Char *cp, size_t n) 645 { 646 if (n == 0) 647 return; 648 649 if (n > (size_t)el->el_terminal.t_size.h) { 650 #ifdef DEBUG_SCREEN 651 (void) fprintf(el->el_errfile, 652 "terminal_overwrite: n is riduculous: %d\r\n", n); 653 #endif /* DEBUG_SCREEN */ 654 return; 655 } 656 657 do { 658 /* terminal__putc() ignores any MB_FILL_CHARs */ 659 terminal__putc(el, *cp++); 660 el->el_cursor.h++; 661 } while (--n); 662 663 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */ 664 if (EL_HAS_AUTO_MARGINS) { /* yes */ 665 el->el_cursor.h = 0; 666 el->el_cursor.v++; 667 if (EL_HAS_MAGIC_MARGINS) { 668 /* force the wrap to avoid the "magic" 669 * situation */ 670 Char c; 671 if ((c = el->el_display[el->el_cursor.v] 672 [el->el_cursor.h]) != '\0') { 673 terminal_overwrite(el, &c, (size_t)1); 674 #ifdef WIDECHAR 675 while (el->el_display[el->el_cursor.v] 676 [el->el_cursor.h] == MB_FILL_CHAR) 677 el->el_cursor.h++; 678 #endif 679 } else { 680 terminal__putc(el, ' '); 681 el->el_cursor.h = 1; 682 } 683 } 684 } else /* no wrap, but cursor stays on screen */ 685 el->el_cursor.h = el->el_terminal.t_size.h - 1; 686 } 687 } 688 689 690 /* terminal_deletechars(): 691 * Delete num characters 692 */ 693 protected void 694 terminal_deletechars(EditLine *el, int num) 695 { 696 if (num <= 0) 697 return; 698 699 if (!EL_CAN_DELETE) { 700 #ifdef DEBUG_EDIT 701 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); 702 #endif /* DEBUG_EDIT */ 703 return; 704 } 705 if (num > el->el_terminal.t_size.h) { 706 #ifdef DEBUG_SCREEN 707 (void) fprintf(el->el_errfile, 708 "terminal_deletechars: num is riduculous: %d\r\n", num); 709 #endif /* DEBUG_SCREEN */ 710 return; 711 } 712 if (GoodStr(T_DC)) /* if I have multiple delete */ 713 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more 714 * expen. */ 715 terminal_tputs(el, tgoto(Str(T_DC), num, num), num); 716 return; 717 } 718 if (GoodStr(T_dm)) /* if I have delete mode */ 719 terminal_tputs(el, Str(T_dm), 1); 720 721 if (GoodStr(T_dc)) /* else do one at a time */ 722 while (num--) 723 terminal_tputs(el, Str(T_dc), 1); 724 725 if (GoodStr(T_ed)) /* if I have delete mode */ 726 terminal_tputs(el, Str(T_ed), 1); 727 } 728 729 730 /* terminal_insertwrite(): 731 * Puts terminal in insert character mode or inserts num 732 * characters in the line 733 * Assumes MB_FILL_CHARs are present to keep column count correct 734 */ 735 protected void 736 terminal_insertwrite(EditLine *el, Char *cp, int num) 737 { 738 if (num <= 0) 739 return; 740 if (!EL_CAN_INSERT) { 741 #ifdef DEBUG_EDIT 742 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); 743 #endif /* DEBUG_EDIT */ 744 return; 745 } 746 if (num > el->el_terminal.t_size.h) { 747 #ifdef DEBUG_SCREEN 748 (void) fprintf(el->el_errfile, 749 "StartInsert: num is riduculous: %d\r\n", num); 750 #endif /* DEBUG_SCREEN */ 751 return; 752 } 753 if (GoodStr(T_IC)) /* if I have multiple insert */ 754 if ((num > 1) || !GoodStr(T_ic)) { 755 /* if ic would be more expensive */ 756 terminal_tputs(el, tgoto(Str(T_IC), num, num), num); 757 terminal_overwrite(el, cp, (size_t)num); 758 /* this updates el_cursor.h */ 759 return; 760 } 761 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ 762 terminal_tputs(el, Str(T_im), 1); 763 764 el->el_cursor.h += num; 765 do 766 terminal__putc(el, *cp++); 767 while (--num); 768 769 if (GoodStr(T_ip)) /* have to make num chars insert */ 770 terminal_tputs(el, Str(T_ip), 1); 771 772 terminal_tputs(el, Str(T_ei), 1); 773 return; 774 } 775 do { 776 if (GoodStr(T_ic)) /* have to make num chars insert */ 777 terminal_tputs(el, Str(T_ic), 1); 778 779 terminal__putc(el, *cp++); 780 781 el->el_cursor.h++; 782 783 if (GoodStr(T_ip)) /* have to make num chars insert */ 784 terminal_tputs(el, Str(T_ip), 1); 785 /* pad the inserted char */ 786 787 } while (--num); 788 } 789 790 791 /* terminal_clear_EOL(): 792 * clear to end of line. There are num characters to clear 793 */ 794 protected void 795 terminal_clear_EOL(EditLine *el, int num) 796 { 797 int i; 798 799 if (EL_CAN_CEOL && GoodStr(T_ce)) 800 terminal_tputs(el, Str(T_ce), 1); 801 else { 802 for (i = 0; i < num; i++) 803 terminal__putc(el, ' '); 804 el->el_cursor.h += num; /* have written num spaces */ 805 } 806 } 807 808 809 /* terminal_clear_screen(): 810 * Clear the screen 811 */ 812 protected void 813 terminal_clear_screen(EditLine *el) 814 { /* clear the whole screen and home */ 815 816 if (GoodStr(T_cl)) 817 /* send the clear screen code */ 818 terminal_tputs(el, Str(T_cl), Val(T_li)); 819 else if (GoodStr(T_ho) && GoodStr(T_cd)) { 820 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */ 821 /* clear to bottom of screen */ 822 terminal_tputs(el, Str(T_cd), Val(T_li)); 823 } else { 824 terminal__putc(el, '\r'); 825 terminal__putc(el, '\n'); 826 } 827 } 828 829 830 /* terminal_beep(): 831 * Beep the way the terminal wants us 832 */ 833 protected void 834 terminal_beep(EditLine *el) 835 { 836 if (GoodStr(T_bl)) 837 /* what termcap says we should use */ 838 terminal_tputs(el, Str(T_bl), 1); 839 else 840 terminal__putc(el, '\007'); /* an ASCII bell; ^G */ 841 } 842 843 844 protected void 845 terminal_get(EditLine *el, const char **term) 846 { 847 *term = el->el_terminal.t_name; 848 } 849 850 851 /* terminal_set(): 852 * Read in the terminal capabilities from the requested terminal 853 */ 854 protected int 855 terminal_set(EditLine *el, const char *term) 856 { 857 int i; 858 char buf[TC_BUFSIZE]; 859 char *area; 860 const struct termcapstr *t; 861 sigset_t oset, nset; 862 int lins, cols; 863 864 (void) sigemptyset(&nset); 865 (void) sigaddset(&nset, SIGWINCH); 866 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 867 868 area = buf; 869 870 871 if (term == NULL) 872 term = getenv("TERM"); 873 874 if (!term || !term[0]) 875 term = "dumb"; 876 877 if (strcmp(term, "emacs") == 0) 878 el->el_flags |= EDIT_DISABLED; 879 880 memset(el->el_terminal.t_cap, 0, TC_BUFSIZE); 881 882 i = tgetent(el->el_terminal.t_cap, term); 883 884 if (i <= 0) { 885 if (i == -1) 886 (void) fprintf(el->el_errfile, 887 "Cannot read termcap database;\n"); 888 else if (i == 0) 889 (void) fprintf(el->el_errfile, 890 "No entry for terminal type \"%s\";\n", term); 891 (void) fprintf(el->el_errfile, 892 "using dumb terminal settings.\n"); 893 Val(T_co) = 80; /* do a dumb terminal */ 894 Val(T_pt) = Val(T_km) = Val(T_li) = 0; 895 Val(T_xt) = Val(T_MT); 896 for (t = tstr; t->name != NULL; t++) 897 terminal_alloc(el, t, NULL); 898 } else { 899 /* auto/magic margins */ 900 Val(T_am) = tgetflag("am"); 901 Val(T_xn) = tgetflag("xn"); 902 /* Can we tab */ 903 Val(T_pt) = tgetflag("pt"); 904 Val(T_xt) = tgetflag("xt"); 905 /* do we have a meta? */ 906 Val(T_km) = tgetflag("km"); 907 Val(T_MT) = tgetflag("MT"); 908 /* Get the size */ 909 Val(T_co) = tgetnum("co"); 910 Val(T_li) = tgetnum("li"); 911 for (t = tstr; t->name != NULL; t++) { 912 /* XXX: some systems' tgetstr needs non const */ 913 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name), 914 &area)); 915 } 916 } 917 918 if (Val(T_co) < 2) 919 Val(T_co) = 80; /* just in case */ 920 if (Val(T_li) < 1) 921 Val(T_li) = 24; 922 923 el->el_terminal.t_size.v = Val(T_co); 924 el->el_terminal.t_size.h = Val(T_li); 925 926 terminal_setflags(el); 927 928 /* get the correct window size */ 929 (void) terminal_get_size(el, &lins, &cols); 930 if (terminal_change_size(el, lins, cols) == -1) 931 return -1; 932 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 933 terminal_bind_arrow(el); 934 el->el_terminal.t_name = term; 935 return i <= 0 ? -1 : 0; 936 } 937 938 939 /* terminal_get_size(): 940 * Return the new window size in lines and cols, and 941 * true if the size was changed. 942 */ 943 protected int 944 terminal_get_size(EditLine *el, int *lins, int *cols) 945 { 946 947 *cols = Val(T_co); 948 *lins = Val(T_li); 949 950 #ifdef TIOCGWINSZ 951 { 952 struct winsize ws; 953 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) { 954 if (ws.ws_col) 955 *cols = ws.ws_col; 956 if (ws.ws_row) 957 *lins = ws.ws_row; 958 } 959 } 960 #endif 961 #ifdef TIOCGSIZE 962 { 963 struct ttysize ts; 964 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) { 965 if (ts.ts_cols) 966 *cols = ts.ts_cols; 967 if (ts.ts_lines) 968 *lins = ts.ts_lines; 969 } 970 } 971 #endif 972 return Val(T_co) != *cols || Val(T_li) != *lins; 973 } 974 975 976 /* terminal_change_size(): 977 * Change the size of the terminal 978 */ 979 protected int 980 terminal_change_size(EditLine *el, int lins, int cols) 981 { 982 /* 983 * Just in case 984 */ 985 Val(T_co) = (cols < 2) ? 80 : cols; 986 Val(T_li) = (lins < 1) ? 24 : lins; 987 988 /* re-make display buffers */ 989 if (terminal_rebuffer_display(el) == -1) 990 return -1; 991 re_clear_display(el); 992 return 0; 993 } 994 995 996 /* terminal_init_arrow(): 997 * Initialize the arrow key bindings from termcap 998 */ 999 private void 1000 terminal_init_arrow(EditLine *el) 1001 { 1002 funckey_t *arrow = el->el_terminal.t_fkey; 1003 1004 arrow[A_K_DN].name = STR("down"); 1005 arrow[A_K_DN].key = T_kd; 1006 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY; 1007 arrow[A_K_DN].type = XK_CMD; 1008 1009 arrow[A_K_UP].name = STR("up"); 1010 arrow[A_K_UP].key = T_ku; 1011 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY; 1012 arrow[A_K_UP].type = XK_CMD; 1013 1014 arrow[A_K_LT].name = STR("left"); 1015 arrow[A_K_LT].key = T_kl; 1016 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR; 1017 arrow[A_K_LT].type = XK_CMD; 1018 1019 arrow[A_K_RT].name = STR("right"); 1020 arrow[A_K_RT].key = T_kr; 1021 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR; 1022 arrow[A_K_RT].type = XK_CMD; 1023 1024 arrow[A_K_HO].name = STR("home"); 1025 arrow[A_K_HO].key = T_kh; 1026 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG; 1027 arrow[A_K_HO].type = XK_CMD; 1028 1029 arrow[A_K_EN].name = STR("end"); 1030 arrow[A_K_EN].key = T_at7; 1031 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END; 1032 arrow[A_K_EN].type = XK_CMD; 1033 } 1034 1035 1036 /* terminal_reset_arrow(): 1037 * Reset arrow key bindings 1038 */ 1039 private void 1040 terminal_reset_arrow(EditLine *el) 1041 { 1042 funckey_t *arrow = el->el_terminal.t_fkey; 1043 static const Char strA[] = {033, '[', 'A', '\0'}; 1044 static const Char strB[] = {033, '[', 'B', '\0'}; 1045 static const Char strC[] = {033, '[', 'C', '\0'}; 1046 static const Char strD[] = {033, '[', 'D', '\0'}; 1047 static const Char strH[] = {033, '[', 'H', '\0'}; 1048 static const Char strF[] = {033, '[', 'F', '\0'}; 1049 static const Char stOA[] = {033, 'O', 'A', '\0'}; 1050 static const Char stOB[] = {033, 'O', 'B', '\0'}; 1051 static const Char stOC[] = {033, 'O', 'C', '\0'}; 1052 static const Char stOD[] = {033, 'O', 'D', '\0'}; 1053 static const Char stOH[] = {033, 'O', 'H', '\0'}; 1054 static const Char stOF[] = {033, 'O', 'F', '\0'}; 1055 1056 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1057 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1058 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1059 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1060 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1061 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1062 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1063 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1064 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1065 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1066 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1067 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1068 1069 if (el->el_map.type != MAP_VI) 1070 return; 1071 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1072 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1073 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1074 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1075 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1076 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1077 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1078 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1079 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1080 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1081 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1082 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1083 } 1084 1085 1086 /* terminal_set_arrow(): 1087 * Set an arrow key binding 1088 */ 1089 protected int 1090 terminal_set_arrow(EditLine *el, const Char *name, keymacro_value_t *fun, 1091 int type) 1092 { 1093 funckey_t *arrow = el->el_terminal.t_fkey; 1094 int i; 1095 1096 for (i = 0; i < A_K_NKEYS; i++) 1097 if (Strcmp(name, arrow[i].name) == 0) { 1098 arrow[i].fun = *fun; 1099 arrow[i].type = type; 1100 return 0; 1101 } 1102 return -1; 1103 } 1104 1105 1106 /* terminal_clear_arrow(): 1107 * Clear an arrow key binding 1108 */ 1109 protected int 1110 terminal_clear_arrow(EditLine *el, const Char *name) 1111 { 1112 funckey_t *arrow = el->el_terminal.t_fkey; 1113 int i; 1114 1115 for (i = 0; i < A_K_NKEYS; i++) 1116 if (Strcmp(name, arrow[i].name) == 0) { 1117 arrow[i].type = XK_NOD; 1118 return 0; 1119 } 1120 return -1; 1121 } 1122 1123 1124 /* terminal_print_arrow(): 1125 * Print the arrow key bindings 1126 */ 1127 protected void 1128 terminal_print_arrow(EditLine *el, const Char *name) 1129 { 1130 int i; 1131 funckey_t *arrow = el->el_terminal.t_fkey; 1132 1133 for (i = 0; i < A_K_NKEYS; i++) 1134 if (*name == '\0' || Strcmp(name, arrow[i].name) == 0) 1135 if (arrow[i].type != XK_NOD) 1136 keymacro_kprint(el, arrow[i].name, 1137 &arrow[i].fun, arrow[i].type); 1138 } 1139 1140 1141 /* terminal_bind_arrow(): 1142 * Bind the arrow keys 1143 */ 1144 protected void 1145 terminal_bind_arrow(EditLine *el) 1146 { 1147 el_action_t *map; 1148 const el_action_t *dmap; 1149 int i, j; 1150 char *p; 1151 funckey_t *arrow = el->el_terminal.t_fkey; 1152 1153 /* Check if the components needed are initialized */ 1154 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL) 1155 return; 1156 1157 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key; 1158 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs; 1159 1160 terminal_reset_arrow(el); 1161 1162 for (i = 0; i < A_K_NKEYS; i++) { 1163 Char wt_str[VISUAL_WIDTH_MAX]; 1164 Char *px; 1165 size_t n; 1166 1167 p = el->el_terminal.t_str[arrow[i].key]; 1168 if (!p || !*p) 1169 continue; 1170 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n) 1171 wt_str[n] = p[n]; 1172 while (n < VISUAL_WIDTH_MAX) 1173 wt_str[n++] = '\0'; 1174 px = wt_str; 1175 j = (unsigned char) *p; 1176 /* 1177 * Assign the arrow keys only if: 1178 * 1179 * 1. They are multi-character arrow keys and the user 1180 * has not re-assigned the leading character, or 1181 * has re-assigned the leading character to be 1182 * ED_SEQUENCE_LEAD_IN 1183 * 2. They are single arrow keys pointing to an 1184 * unassigned key. 1185 */ 1186 if (arrow[i].type == XK_NOD) 1187 keymacro_clear(el, map, px); 1188 else { 1189 if (p[1] && (dmap[j] == map[j] || 1190 map[j] == ED_SEQUENCE_LEAD_IN)) { 1191 keymacro_add(el, px, &arrow[i].fun, 1192 arrow[i].type); 1193 map[j] = ED_SEQUENCE_LEAD_IN; 1194 } else if (map[j] == ED_UNASSIGNED) { 1195 keymacro_clear(el, map, px); 1196 if (arrow[i].type == XK_CMD) 1197 map[j] = arrow[i].fun.cmd; 1198 else 1199 keymacro_add(el, px, &arrow[i].fun, 1200 arrow[i].type); 1201 } 1202 } 1203 } 1204 } 1205 1206 /* terminal_putc(): 1207 * Add a character 1208 */ 1209 private int 1210 terminal_putc(int c) 1211 { 1212 if (terminal_outfile == NULL) 1213 return -1; 1214 return fputc(c, terminal_outfile); 1215 } 1216 1217 private void 1218 terminal_tputs(EditLine *el, const char *cap, int affcnt) 1219 { 1220 #ifdef _REENTRANT 1221 pthread_mutex_lock(&terminal_mutex); 1222 #endif 1223 terminal_outfile = el->el_outfile; 1224 (void)tputs(cap, affcnt, terminal_putc); 1225 #ifdef _REENTRANT 1226 pthread_mutex_unlock(&terminal_mutex); 1227 #endif 1228 } 1229 1230 /* terminal__putc(): 1231 * Add a character 1232 */ 1233 protected int 1234 terminal__putc(EditLine *el, Int c) 1235 { 1236 char buf[MB_LEN_MAX +1]; 1237 ssize_t i; 1238 if (c == (Int)MB_FILL_CHAR) 1239 return 0; 1240 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c); 1241 if (i <= 0) 1242 return (int)i; 1243 buf[i] = '\0'; 1244 return fputs(buf, el->el_outfile); 1245 } 1246 1247 /* terminal__flush(): 1248 * Flush output 1249 */ 1250 protected void 1251 terminal__flush(EditLine *el) 1252 { 1253 1254 (void) fflush(el->el_outfile); 1255 } 1256 1257 /* terminal_writec(): 1258 * Write the given character out, in a human readable form 1259 */ 1260 protected void 1261 terminal_writec(EditLine *el, Int c) 1262 { 1263 Char visbuf[VISUAL_WIDTH_MAX +1]; 1264 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c); 1265 visbuf[vcnt] = '\0'; 1266 terminal_overwrite(el, visbuf, (size_t)vcnt); 1267 terminal__flush(el); 1268 } 1269 1270 1271 /* terminal_telltc(): 1272 * Print the current termcap characteristics 1273 */ 1274 protected int 1275 /*ARGSUSED*/ 1276 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)), 1277 const Char **argv __attribute__((__unused__))) 1278 { 1279 const struct termcapstr *t; 1280 char **ts; 1281 1282 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n"); 1283 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n"); 1284 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n", 1285 Val(T_co), Val(T_li)); 1286 (void) fprintf(el->el_outfile, 1287 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no"); 1288 (void) fprintf(el->el_outfile, 1289 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not "); 1290 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n", 1291 EL_HAS_AUTO_MARGINS ? "has" : "does not have"); 1292 if (EL_HAS_AUTO_MARGINS) 1293 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n", 1294 EL_HAS_MAGIC_MARGINS ? "has" : "does not have"); 1295 1296 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) { 1297 const char *ub; 1298 if (*ts && **ts) { 1299 ub = ct_encode_string(ct_visual_string( 1300 ct_decode_string(*ts, &el->el_scratch)), 1301 &el->el_scratch); 1302 } else { 1303 ub = "(empty)"; 1304 } 1305 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", 1306 t->long_name, t->name, ub); 1307 } 1308 (void) fputc('\n', el->el_outfile); 1309 return 0; 1310 } 1311 1312 1313 /* terminal_settc(): 1314 * Change the current terminal characteristics 1315 */ 1316 protected int 1317 /*ARGSUSED*/ 1318 terminal_settc(EditLine *el, int argc __attribute__((__unused__)), 1319 const Char **argv) 1320 { 1321 const struct termcapstr *ts; 1322 const struct termcapval *tv; 1323 char what[8], how[8]; 1324 1325 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1326 return -1; 1327 1328 strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what)); 1329 what[sizeof(what) - 1] = '\0'; 1330 strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how)); 1331 how[sizeof(how) - 1] = '\0'; 1332 1333 /* 1334 * Do the strings first 1335 */ 1336 for (ts = tstr; ts->name != NULL; ts++) 1337 if (strcmp(ts->name, what) == 0) 1338 break; 1339 1340 if (ts->name != NULL) { 1341 terminal_alloc(el, ts, how); 1342 terminal_setflags(el); 1343 return 0; 1344 } 1345 /* 1346 * Do the numeric ones second 1347 */ 1348 for (tv = tval; tv->name != NULL; tv++) 1349 if (strcmp(tv->name, what) == 0) 1350 break; 1351 1352 if (tv->name != NULL) 1353 return -1; 1354 1355 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1356 tv == &tval[T_am] || tv == &tval[T_xn]) { 1357 if (strcmp(how, "yes") == 0) 1358 el->el_terminal.t_val[tv - tval] = 1; 1359 else if (strcmp(how, "no") == 0) 1360 el->el_terminal.t_val[tv - tval] = 0; 1361 else { 1362 (void) fprintf(el->el_errfile, 1363 "" FSTR ": Bad value `%s'.\n", argv[0], how); 1364 return -1; 1365 } 1366 terminal_setflags(el); 1367 if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1) 1368 return -1; 1369 return 0; 1370 } else { 1371 long i; 1372 char *ep; 1373 1374 i = strtol(how, &ep, 10); 1375 if (*ep != '\0') { 1376 (void) fprintf(el->el_errfile, 1377 "" FSTR ": Bad value `%s'.\n", argv[0], how); 1378 return -1; 1379 } 1380 el->el_terminal.t_val[tv - tval] = (int) i; 1381 el->el_terminal.t_size.v = Val(T_co); 1382 el->el_terminal.t_size.h = Val(T_li); 1383 if (tv == &tval[T_co] || tv == &tval[T_li]) 1384 if (terminal_change_size(el, Val(T_li), Val(T_co)) 1385 == -1) 1386 return -1; 1387 return 0; 1388 } 1389 } 1390 1391 1392 /* terminal_gettc(): 1393 * Get the current terminal characteristics 1394 */ 1395 protected int 1396 /*ARGSUSED*/ 1397 terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv) 1398 { 1399 const struct termcapstr *ts; 1400 const struct termcapval *tv; 1401 char *what; 1402 void *how; 1403 1404 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1405 return -1; 1406 1407 what = argv[1]; 1408 how = argv[2]; 1409 1410 /* 1411 * Do the strings first 1412 */ 1413 for (ts = tstr; ts->name != NULL; ts++) 1414 if (strcmp(ts->name, what) == 0) 1415 break; 1416 1417 if (ts->name != NULL) { 1418 *(char **)how = el->el_terminal.t_str[ts - tstr]; 1419 return 0; 1420 } 1421 /* 1422 * Do the numeric ones second 1423 */ 1424 for (tv = tval; tv->name != NULL; tv++) 1425 if (strcmp(tv->name, what) == 0) 1426 break; 1427 1428 if (tv->name == NULL) 1429 return -1; 1430 1431 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1432 tv == &tval[T_am] || tv == &tval[T_xn]) { 1433 static char yes[] = "yes"; 1434 static char no[] = "no"; 1435 if (el->el_terminal.t_val[tv - tval]) 1436 *(char **)how = yes; 1437 else 1438 *(char **)how = no; 1439 return 0; 1440 } else { 1441 *(int *)how = el->el_terminal.t_val[tv - tval]; 1442 return 0; 1443 } 1444 } 1445 1446 /* terminal_echotc(): 1447 * Print the termcap string out with variable substitution 1448 */ 1449 protected int 1450 /*ARGSUSED*/ 1451 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)), 1452 const Char **argv) 1453 { 1454 char *cap, *scap; 1455 Char *ep; 1456 int arg_need, arg_cols, arg_rows; 1457 int verbose = 0, silent = 0; 1458 char *area; 1459 static const char fmts[] = "%s\n", fmtd[] = "%d\n"; 1460 const struct termcapstr *t; 1461 char buf[TC_BUFSIZE]; 1462 long i; 1463 1464 area = buf; 1465 1466 if (argv == NULL || argv[1] == NULL) 1467 return -1; 1468 argv++; 1469 1470 if (argv[0][0] == '-') { 1471 switch (argv[0][1]) { 1472 case 'v': 1473 verbose = 1; 1474 break; 1475 case 's': 1476 silent = 1; 1477 break; 1478 default: 1479 /* stderror(ERR_NAME | ERR_TCUSAGE); */ 1480 break; 1481 } 1482 argv++; 1483 } 1484 if (!*argv || *argv[0] == '\0') 1485 return 0; 1486 if (Strcmp(*argv, STR("tabs")) == 0) { 1487 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no"); 1488 return 0; 1489 } else if (Strcmp(*argv, STR("meta")) == 0) { 1490 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no"); 1491 return 0; 1492 } else if (Strcmp(*argv, STR("xn")) == 0) { 1493 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ? 1494 "yes" : "no"); 1495 return 0; 1496 } else if (Strcmp(*argv, STR("am")) == 0) { 1497 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ? 1498 "yes" : "no"); 1499 return 0; 1500 } else if (Strcmp(*argv, STR("baud")) == 0) { 1501 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed); 1502 return 0; 1503 } else if (Strcmp(*argv, STR("rows")) == 0 || 1504 Strcmp(*argv, STR("lines")) == 0) { 1505 (void) fprintf(el->el_outfile, fmtd, Val(T_li)); 1506 return 0; 1507 } else if (Strcmp(*argv, STR("cols")) == 0) { 1508 (void) fprintf(el->el_outfile, fmtd, Val(T_co)); 1509 return 0; 1510 } 1511 /* 1512 * Try to use our local definition first 1513 */ 1514 scap = NULL; 1515 for (t = tstr; t->name != NULL; t++) 1516 if (strcmp(t->name, 1517 ct_encode_string(*argv, &el->el_scratch)) == 0) { 1518 scap = el->el_terminal.t_str[t - tstr]; 1519 break; 1520 } 1521 if (t->name == NULL) { 1522 /* XXX: some systems' tgetstr needs non const */ 1523 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area); 1524 } 1525 if (!scap || scap[0] == '\0') { 1526 if (!silent) 1527 (void) fprintf(el->el_errfile, 1528 "echotc: Termcap parameter `" FSTR "' not found.\n", 1529 *argv); 1530 return -1; 1531 } 1532 /* 1533 * Count home many values we need for this capability. 1534 */ 1535 for (cap = scap, arg_need = 0; *cap; cap++) 1536 if (*cap == '%') 1537 switch (*++cap) { 1538 case 'd': 1539 case '2': 1540 case '3': 1541 case '.': 1542 case '+': 1543 arg_need++; 1544 break; 1545 case '%': 1546 case '>': 1547 case 'i': 1548 case 'r': 1549 case 'n': 1550 case 'B': 1551 case 'D': 1552 break; 1553 default: 1554 /* 1555 * hpux has lot's of them... 1556 */ 1557 if (verbose) 1558 (void) fprintf(el->el_errfile, 1559 "echotc: Warning: unknown termcap %% `%c'.\n", 1560 *cap); 1561 /* This is bad, but I won't complain */ 1562 break; 1563 } 1564 1565 switch (arg_need) { 1566 case 0: 1567 argv++; 1568 if (*argv && *argv[0]) { 1569 if (!silent) 1570 (void) fprintf(el->el_errfile, 1571 "echotc: Warning: Extra argument `" FSTR "'.\n", 1572 *argv); 1573 return -1; 1574 } 1575 terminal_tputs(el, scap, 1); 1576 break; 1577 case 1: 1578 argv++; 1579 if (!*argv || *argv[0] == '\0') { 1580 if (!silent) 1581 (void) fprintf(el->el_errfile, 1582 "echotc: Warning: Missing argument.\n"); 1583 return -1; 1584 } 1585 arg_cols = 0; 1586 i = Strtol(*argv, &ep, 10); 1587 if (*ep != '\0' || i < 0) { 1588 if (!silent) 1589 (void) fprintf(el->el_errfile, 1590 "echotc: Bad value `" FSTR "' for rows.\n", 1591 *argv); 1592 return -1; 1593 } 1594 arg_rows = (int) i; 1595 argv++; 1596 if (*argv && *argv[0]) { 1597 if (!silent) 1598 (void) fprintf(el->el_errfile, 1599 "echotc: Warning: Extra argument `" FSTR 1600 "'.\n", *argv); 1601 return -1; 1602 } 1603 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1); 1604 break; 1605 default: 1606 /* This is wrong, but I will ignore it... */ 1607 if (verbose) 1608 (void) fprintf(el->el_errfile, 1609 "echotc: Warning: Too many required arguments (%d).\n", 1610 arg_need); 1611 /* FALLTHROUGH */ 1612 case 2: 1613 argv++; 1614 if (!*argv || *argv[0] == '\0') { 1615 if (!silent) 1616 (void) fprintf(el->el_errfile, 1617 "echotc: Warning: Missing argument.\n"); 1618 return -1; 1619 } 1620 i = Strtol(*argv, &ep, 10); 1621 if (*ep != '\0' || i < 0) { 1622 if (!silent) 1623 (void) fprintf(el->el_errfile, 1624 "echotc: Bad value `" FSTR "' for cols.\n", 1625 *argv); 1626 return -1; 1627 } 1628 arg_cols = (int) i; 1629 argv++; 1630 if (!*argv || *argv[0] == '\0') { 1631 if (!silent) 1632 (void) fprintf(el->el_errfile, 1633 "echotc: Warning: Missing argument.\n"); 1634 return -1; 1635 } 1636 i = Strtol(*argv, &ep, 10); 1637 if (*ep != '\0' || i < 0) { 1638 if (!silent) 1639 (void) fprintf(el->el_errfile, 1640 "echotc: Bad value `" FSTR "' for rows.\n", 1641 *argv); 1642 return -1; 1643 } 1644 arg_rows = (int) i; 1645 if (*ep != '\0') { 1646 if (!silent) 1647 (void) fprintf(el->el_errfile, 1648 "echotc: Bad value `" FSTR "'.\n", *argv); 1649 return -1; 1650 } 1651 argv++; 1652 if (*argv && *argv[0]) { 1653 if (!silent) 1654 (void) fprintf(el->el_errfile, 1655 "echotc: Warning: Extra argument `" FSTR 1656 "'.\n", *argv); 1657 return -1; 1658 } 1659 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows); 1660 break; 1661 } 1662 return 0; 1663 } 1664